Dust-receptacle.



J. S. THURMAN.

DUST REGEPTAOLE.

APPLICATION TILED MAY 24. 1909.

Patented Mar. 8,1910.

WITNESSES:

.JNVEN TOR. John S-Thurman- ATOR E Y.

1. TD STATES PATEN oFFIoE.

7 JOHN S. THURMAN, OF ST. LQUIS, MISSOURI. I

DUST-BECEPTAGLE.

Specification of Letters Patent. Patented Mar. 8, 191 1}.

Original application filed August 1, 1908, Serial No. 448,463. Divided and this application fi'ted May 24, i909. serial'maei'fiw.

To all whom it may concern:

Be it known that 1, JOHN S. THURMAN, citizen of the United States, residing at St. Louis, State of Missouri, have invented certain" new and useful Improvements in set forth in the specification and pointed out in the claims.

In the drawings, Figure 1 is a perspective showing the application of my invention; Fig. 2 is avertical middle section of the dnst-receptacle-taken on the line 22 of Fig.

3; Fig. 3 is a horizontal section on the line 3--3 of Fig. 2; Fi 4 is a horizontal section on the line H oi Fig. 2 taken through the base of the hopper of the receptacle; Fig. 5 is a side elevation of the base of the hopper of the receptacle; Fig.6 is a vertical transverse section on the line 6-6 of Fig. 5; and Fig. 7 is an enlarged middle section of the glass tube or cylinder for observing the dust 'as'it passes into the receptacle.

The present is a division of my pendin application Serial Number 446,463, 4 file Aug. 1, 1908, for electrically driven vacuum cleaner, being confined to the receptacle proper.

It has for its object to provide a dustreceptacle for house-cleaning systems which will insure a maximum exhaust for the lim ited power available in the ordinary incandescent electric-lamp socket supplying the energy to. the motor for the vacuum pump.

A further object is to eliminate from the construction of the pump both fans and bellows.

A further ohject is to provide a receptacle wherein the course taken by the dust-laden air will insure perfect filtering thereof be fore the same is discharged into the room or open space in which" the apparatus may be located.

A further obj eet is to make suitable provision for observing the passage of the dust into the receptacl 7 .The invention embodies however, other as further details the advantages or which will be readily apparent from a detailed-description thereof which is as follows Referring to the drawings T, represents 7 a truck of any convenient design a'da ted to be wheeled about the premises by a and'le or frame H hinged at one end thereto. Mounted at the front of the truck is an electric motor M to which the necessary current may be conducted by a wire 'w leading from a plug p. The motor-shaft is geared in any -mechani-cal manner to the shaft of the double-cylinder vacuum pump P, the exhauster pipes 1 of which terminate in an intake leg or pipe 2 directly connected to the air-discharge opening of the dust-receptacle R. Since the ump is not herein claimed no detailed descr ption thereof is necessary.

The upper portion or tank of the dust receptacle is preferably of pressed steel, and rests on the tank-bottom comprising a conical hopper 3 having a central discharge mouth closed by a door D, below which is a dustan L. 'The door is provided with a pair 0- "diametrically disposed claws 4, 4,

which, by aturning of the door in proper direction about its vertical axis, ride up the inclined faces of the wedges or keepers 5, 5, carried by the walls of the hopper mouth, and thereby force the door a'galnst the rubber gasket 5 as shown (Fig. 6) thus insuring a tight joint. By simply givingthe door a turn in reverse direction, a sufficient distance to disengage the claws from the wedges, the door may be removed and the contents of the receptacle be allowed to drop into the pan L. I

Formed integrally with the hopper base of the dust receptacle (and virtually an extension of the air eduction leg 2 coupled thereto) is an upwardly extendin elbow 6 to the upper and inner terminal 0 which is screwed the base of the filter-supporting pipe 7, to whose upper end is screwed the upper terminal head or disk 8, and to the lower end of which is screwed the lower head .or disk 8 of a filter or screen F composed of a suitable cloth covering secured to a series of alternately large and small rings 1', 1", the pipe 7 being provided with elongated filtered air therethrough from the tank to the pump. The inner end of the elbow 6 slots or openings 9' for the passage of the of the latter, this character of flow tending to precipitate the dust toward the bottom and into the hopper 3 where it naturally should collect. Again, the annular space between the filter F and the walls of the receptacle B being considerably constricted by reason of the large cross-sectional diameter of the filter, restrains the air more or less in its passage through the filter, and hence affords ample time forthe dust to precipi tate itself into the hopper rather than penetrate the fabric of the filter.

Tapping thewalls of the receptacle immediately above the hopper 3, and substantially ninety degrees from the air discharge therefrom is a transparent or glass dust-display tube 10 secured in positlon between the flanged heads 11, 12, tied by screws 13 passed through the flanges, the head 11 being secured to the receptacle wall, and the head 12 being provided with a screw-nipple 12 to which one end of the suction or line-hose h is secured, the opposite end of the hose being connected to the suction-head or renovating tool t (Fig. 1). The transparent character of the display tube 10 allows the operator to inspect the dust as it is drawn into the receptacle, and affords him the opportunity of judging when the cleaning operation is concluded.

The operation of the invention will be readily understood. The plug p is connected to any convenient electric-light socket or equivalent fixture E, whereupon the motor M is. at once set into motion and the vacuum pump P operated. This draws the air into the receptacle through the tool If and linehose h, the air being sucked through the filter F, pipe 7, elbow 6, leg 2 and into the vacuum pump whence it is discharged in a way well known in the art. The air thus drawn through the apparatus (see arrows Fi 2) leaves behind its impurities or dust an dirt, which drop to the bottom of the receptacle' B into' the hopper 3 whence it may be removed by the opening of the door D and caught in the dust-pan L.

Sofar as concerns the receptacle R, it is apparent that the pump therefor need not necessarily be electrically operated, any kind of motor being possible of application. Of course for house cleaning purposes, an electric motor is most convenient. In lieu of a pump, any equivalent exhauster may be substituted, a vacuum pump constltuting of course, one species of exhauster. I

l-laving described my invention, what I claim is:-

1. I11 a vacuum cleaner, a dust-receptacle having a compartment adapted to be brought in communication with the induction or intake end of a vacuum pump, a conical hopper at the bottom of said compartment, said intake end being extended in elbow form upwardly hrough the hopper and terminating along the vertical axis of the compartment aforesaid,-the hopper having a dischar e mouth below the elbow, a peripherall slotted tubular extension coupled to the elbow, heads or disks at op oslte ends of the extension, a filter dispose about the extension between the heads, the walls of the receptacle being provided with an opening at a point above the hopper whereby the same may be coupled to a line-hose for conducting a current of air in response to the suction created by the pump.

2. In a vacuum cleaner, a dust receptacle having a compartment adapted to be brought into communication with the intake of an exhauster, a conical ho er at the bottom of said compartment, sai 'ntake being extended in elbow form upwardly through the hopper into the base of the compartment aforesaid, .the hopper having a discharge mouth below the elbow, a tubular extension having peripheral openings, coupled to the elbow, heads at opposite ends of the extension, a filter disposed about the extension between the heads, the walls of the receptacle' being provided with an opening at a point adjacent to the hopper whereby the same may be coupled to the line-hose for conducting a current of air in response to the exhauster.

3. In a vacuum cleaner, a receptacle having a compartment adapted to be brought in communication with the intake end of a vacuum-pump, a conical hopper at the bottom of said compartment, said intake end being extended in elbow-form upwardly through the hopper and terminating along the vertical axis of the compartment aforesaid, the hopper having a disehargemouth below the elbow, a eripherally slotted tubular extension coup ed to the elbow, disks or heads at opposite ends of the slotted extension, a, filter disposed about the extension between the heads and forming a constricted passage with the walls of the compartment, the latter having an opening formed in the wall thereof at a point above the ho per whereby the same may be coupled to a inehose.

4. In combination with a receptacle having an outlet opening formed in the wall thereof, an eduction pipe exerting a draft on the contents of the receptacle, said pipe receptacle from the bottom to a point near the top thereof and suitable provision for discharging the contents of the receptacle from a point below the eduction pipe.

5. In a vacuum cleaner, a receptacle having an eduction upwardly turned elbow terminating on the axis of the receptacle and provided with a discharge hopper below said elbow, said hopper having adischargc month at the bottom thereof, a tube extending from the elbow to the upper portion of the receptacle, and having peripheral openings, heads at opposite ends of the tube, and a filter stretched between the heads.

6. In a vacuum-cleaner, a receptacle havminatin on the axis of the receptacle and provided with a discharge be per below said elbow, said hopper having a discharge mouth at the bottom thereof, a tube extending from the elbow to the top of the receptacle and provided with peripheral slots, heads at 0'9- posite ends of the tube, and a filter stretched between the heads and forming a constricted passage-with the inner walls of the receptacle.

In testimony whereof I aflix my signature, in presence of two witnesses.

JOHN S. THUR-MAN.

Witnesses EMIL STAREK, N. A. MOFFITT. 

